In this communication, we show how a short-pitch diffractive structure can be used as a low-cost high sensitivity device for refractive index measurements with sensitivity of 10 -2. The device consists of a photoresist diffraction grating put in optical contact with a hollow prism used as a container for a test material. Its main advantage is the possibility to monitor the composition of solids, fluids and gases in real time. Knowledge of optical parameters of a system with high accuracy can be vital when working in the biological/medical field.
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Titolo: | Holographic Grating Based High Sensitivity Device for Refractive Index Measurements |
Autori: | |
Data di pubblicazione: | 2010 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.11770/132672 |
Appare nelle tipologie: | 1.1 Articolo in rivista |